.px2rem(@name,@px){
    @{name}:@px/37.5*1rem
}

.head{
    background-color: #7e4c81;
    display: flex;
    .px2rem(height,55);
    align-items: center;
    .left{
        width: 5%;
    }
    .center{
        width: 95%;
        text-align: center;
    }
    img{
        .px2rem(height,23);
        .px2rem(width,32);
    }
    p{
        .px2rem(font-size,20);
        color: white;
        
    }
}
section{
    flex: 1;
    overflow: auto;
    position: relative;
    .sec{
        .px2rem(height,667);
        .px2rem(width,375);
        img{
            width: 100%;
            height: 100%;
        }
    }
}
span{
    position: absolute;
    top: 40%;
    left: 30%;
} 